NEVER HONE IN THE CAR WITH THE CRANK IN..!!!! you will get all the c**p in the bearings...I'd suggest you get the motor out and get the crank out and block stripped before you either cut the ridge & hone.If the ridge is large it sounds like you need a re-bore,fitting new rings to a worn bore is a wate of effort...unless the cars next stop is the 'used' lot...my 2 cents.
